基于單片機(jī)的電子密碼鎖設(shè)計(jì)論文

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摘要:隨著電子產(chǎn)品向智能化和微型化的不斷發(fā)展，單片機(jī)已成為電子產(chǎn)品研制和開發(fā)中首選的控制器。隨著人們生活水平的提高，如何實(shí)現(xiàn)家庭防盜這一問(wèn)題也變的尤其的突出，傳統(tǒng)的機(jī)械鎖由于其構(gòu)造的簡(jiǎn)單，安全性能低，無(wú)法滿足人們的需要。
本文從經(jīng)濟(jì)實(shí)用的角度出發(fā)，采用美國(guó)Atmel公司的單片機(jī)AT89S51與低功耗CMOS型E2PROM AT24C02作為主控芯片與數(shù)據(jù)存儲(chǔ)器單元，結(jié)合外圍的鍵盤輸入、顯示、報(bào)警、開鎖等電路，用匯編語(yǔ)言編寫主控芯片的控制程序，設(shè)計(jì)了一款可以多次更改密碼具有報(bào)警功能的電子密碼鎖。
經(jīng)實(shí)驗(yàn)證明，該密碼鎖具有設(shè)計(jì)方法合理，簡(jiǎn)單易行，成本低，安全實(shí)用等特點(diǎn)，符合住宅、辦公室用鎖要求，具有推廣價(jià)值。


關(guān)鍵詞:密碼鎖 單片機(jī) 報(bào)警


Abstract

As electronic products are developing towards intelligence and minimization, single—chip computers (SCM ) have become the first choice for controllers in the development of electronic products. With the improvement of people's living standards, it has become particularly prominent about how to achieve Anti-theft family. The traditional mechanical lock has such shortcoming as simple structure , Low security, it can't meet people's demands.
For practicality, this paper designs a new electronic cipher lock, which has the function of alarm and whose cipher can be changed many times. This cipher lock uses AT89S51 SCM and E2PROM AT24C02 as main chip and data memory cell . The author made this ciphor lock by use of making controlled program of master CMOS with periphery electrocircuit of keyboard input, display, alarm and unlock.
Experiments show that the designed cipher lock is characterized by its reasonable designing methods, simple operation, low cost and property of safety and practicality．Besides，it works well as a residence lock and has great potential for commercial development．
Key words: Cipher lock SCM Alarm
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